Home / 108,772.36-163,139.08-69,211.96

Finding the Fourth Proportional to 108,772.36, 163,139.08 and 69,211.96

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Solution

The fourth proportional to 108,772.36, 163,139.08 and 69,211.96 is: 103,805.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,772.36 : 163,139.08 = 69,211.96 : x
  2. Step 2: Convert to fraction form
    108,772.36/163,139.08 = 69,211.96/x
  3. Step 3: Cross multiply
    108,772.36x = 163,139.08 × 69,211.96
  4. Step 4: Simplify right side
    108,772.36x = 11,291,175,479.40
  5. Step 5: Solve for x
    x = 11,291,175,479.40/108,772.36
  6. Step 6: Final answer
    x = 103,805.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.